/* 先删除默认的内外边距 */
* {
  margin: 0;
  padding: 0;
}
html {
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  font-size: 62.5%;  
}
body, input, button, a, textarea, select {
  margin: 0;
  font-family: "Helvetica Neue", Helvetica, "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  font-size: 1.4rem;
  line-height: 1.5;
  color: #333;
}
html, body {
  width: 100%;
  height: 100%;
  margin: 0;
}

a {
  text-decoration: none;
}
a:hover, a:focus {
  text-decoration: none;
}
a:hover {
  filter: alpha(opacity=90);
  opacity: .9;
}

/* 文本对齐 */
.tc {
  text-align: center;
}

.tr {
  text-align: right;
}

.tl {
  text-align: left;
}

/* 主体部分样式添加 */
.content {
  color: #d3d6dd;
  background-color: #000000;
  width: 100%;
  height: 100vh;
}
.bg {
  padding:0;
  background:url(./img/pageBg.png) no-repeat center center;
  background-size: cover;
}

.module-box {
  display:flex;  /*弹性布局*/
  justify-content: space-between;
  margin:5px;
}

.d-flex {
  display: flex;
}
.box-middle {
  align-self: center;
}

.panel-padding{
  padding:20px
}